DAY=`date +"%d"`
MONTH=`date +"%m"`
HOUR=`date +"%H"`
MINUTE=`date +"%M"`
pg_dump -x -v  -Fc --dbname=postgresql://btlh_wuliu:btlh@127.0.0.1:5432/wuliu -f wuliu-${MONTH}${DAY}${HOUR}${MINUTE}.cbak

